120/208V wye primary 480V delta secondary bonding question

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kwired said:
He does have inconsistencies in there. He specifies 4 wires plus ground, yet only mentions 480 volt both at the supply end as well as the load end of that feeder.

Also keep in mind in 2014 NEC you can no longer back feed a transformer unless manufacturers instructions permit it. See 450.11(B)
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What was the reasoning behind the CMP accepting that?
 
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